Improvement in ring-binders for umbrella-cases



J.-C.HURCOMBE; RING BINDERS FOR UMBRELLA-CASES.'

No. 177,400. Patented May-16,1876.

NIE STATES PATET QFFICE.

JOHN C. HURGOMBE, OF NEW YORK, N. Y., ASSIGNOR TO DAVID W. ODIORNE, OFELIZABETH, NEW JERSEY.

IMPROVEMENT IN RlNG-BlNDERS FOR UMBRFLLA-CASES.

Specification forming part of Letters Patent No. 177,400, dated May 16,1876; application filed August 9, 1875.

To all whom it may concern:

an Improvement in Metal Ring-Binders for Umbrella-Cases, 8250., of whichthe following is a specification I Umbrella-cases have been made with'ametal ring-binder at the lower end, and the fabric of the case has beendrawn into such ring-binder by a cord, or confined to an eyelet-ring bya metal washer. My improved ring-binder is made for dispensing with thecord and the metal washer. I make use of a concave ringbind er, withnumerous projecting teeth around one. edge that penetrate the paper orother fabric, to hold the same, and the binder, when flattened, ishollow, and the edges clamp the fabric and hold the same firmly. I use aconcentrating instrument that'holds the material into the ring binderwhile it is being closed.

In the drawing, Figure 1 is a sectional view Ofthebinding-ring. Fig. 2is a plan of the same. Fig. 3 is a section of a portion of theumbrella-case with the ring attached thereto, and Fig. 4 is a plan ofthe concentrating instrument.

The ring a is made with the circumference concave, the section being asegment of a circle, as shown in Fig. 1, and around one of the edgesthere are teeth b b projecting, and these are sufficiently numerous topenetrate and hold the material to which the binder is attached. Thepaper, muslin, or other material of the umbrella-case is held into thisring-' binder While the same is compressed edgewise, so as to close theedges toward and upon each other and clamp the material between saidedges, as seen in Fig. 3. For this purpose I make use of forceps withsemi-circular jaws e e, as seen in Fig. 4. The opening between thesejaws is of a diameter corresponding with the diameter of the smallerportion of the ringbinder, and the jaws are thin, so as to act asconcentratingblades, to press the fabric into the groove of thering-binder and hold the same in position while the binder iscompressed. It will generally be best to give a second blow orcompression to each binder after the concentrating-tool has beenremoved, so as to hold the fabric firmly between the edges of the ring,and also by the teeth I), which penetrate such material and turn over toclasp the other edge of the ring.

I do not claim a concave ring-binder, and I am also aware that eyeletshave been notched at the smaller end to form teeth, when spread andflattened.

I claim as my invention- 1. The ring-binder, of sheet-metal, madesectionally as an arc of a circle, with penetraing-teeth projecting fromone edge, as and for the purposes set forth.

2. The method herein specified of inserting metal ring-binders intoumbrella-cases, consisting essentially of first gathering and'hold.

ing the fabric into the grooved ring by means of the concentratinginstrument, and compressing such ring edgewise, then removing theconcentrating instrument, and afterward compressing such binder firmly,substantially in the manner and for the purpose set forth.

Signed by me this 3d day of August, A. D. 1875. 1

JOHN G. HURGOMBE.

